TITLE: GCN CIRCULAR NUMBER: 43130 SUBJECT: GRB 251213A: GRID-10B observation DATE: 25/12/15 16:43:28 GMT FROM: GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn> Xiao-Fan Pan, Long-Hao Li, Chen-Yu Wang, Zi-Rui Yang report on behalf of the GRID Collaboration: GRID reports the detection of GRB 251213A, a long-duration gamma-ray burst. The event triggered GRID-10B at T0 = 2025-12-13 12:30:04 UTC. The measured burst duration (10B) is T90 = 35.5 ± 3.2 s in the 30–2000 keV energy range. The event was also detected by GRID-11B (GCN #43116), GECAM-B (GCN #43106), SVOM/GRM (GCN $43111), and AstroSat CZTI (GCN #43108). The GRID light curves for this event are available at https://mirrors.tuna.tsinghua.edu.cn/GRID/data/GRID-GCN/GRB251213A/GRID_GRB2.... GRID is a student-led project to monitor the transient gamma-ray sky with multiple detectors onboard different nanosatellites in the era of multi-messenger astronomy. For more information about GRID, please refer to the following references: https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4. View this GCN Circular online at https://gcn.nasa.gov/circulars/43130. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...